EFRI-CBE: Engineering of cardiovascular cellular interfaces and tissue constructs

EFRI-CBE：心血管细胞界面和组织结构的工程

• 批准号: 0735551
• 负责人: Beth Pruitt
• 金额: $ 200万
• 依托单位: Stanford University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2007
• 资助国家: 美国
• 起止时间: 2007-09-01 至 2012-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0735551&HistoricalAwards=false
• 关键词: EFRI; CBE; Engineering; cardiovascular; cellular

PI name: B.L. Pruitt Institution: Stanford University Proposal Number: 0735551 EFRI-CBE: Engineering of Cardiovascular Cellular Interfaces and Tissue ConstructsAbstractCardiac cells and tissue are ideal targets for regenerative medicine and fundamental studies of the interplay of cellular and biomolecular level signaling and response for several reasons. First, observation of successful stem cell differentiation to cardiac myocytes is facilitated by readily identifiable immunohistochemical markers as well as characteristic electrical action potentials and mechanical contractions. Second, explanted cells in culture lose their morphology and organization in the absence of drugs or electromechanical stimulation, suggesting that cellular organization is dependent on these cues. Last, myocardium damaged during a heart attack does not regenerate and the weakened muscle results in heart failure. Fundamental understanding of how cardiac myocytes and heart tissue can be regenerated is essential to creating successful therapies for patients with heart disease (affecting 71 million Americans). Recently, several studies have shown that stem cells may offer regenerative potential through direct injection of cells into the damaged myocardium or in situ repair using engineered tissue grafts.The Intellectual Merit of this project lies in the development of basic knowledge and models for cell response to environmental cues. Pluripotent cell responses to changes in environment offer a testbed for characterizing the thresholds and mechanisms of environmental adaptation and remodeling. The outcomes of the baseline and coupled experiments will be made available as a database for other researchers. Models and results will be disseminated by publication and seminars for researchers in the field as well as public seminar forums.The Broader Impacts of this work lie in the enhanced knowledge of cell signaling and differentiation, the role of culture environmental parameters in tissue engineering, and the enhanced design guidance and technology developed which will ultimately enable regenerative therapies for victims of heart disease. Topics of this research will be incorporated in modules for teaching basic engineering and materials courses and the Principal Investigators (PIs) will recruit undergraduates for research experiences in their labs. The PIs actively participate in outreach, undergraduate research opportunities, and research experience for teacher programs and will expand these efforts related to this project. A workshop on the research topics will be held in the final year of the project.

PI名称：B.L。普鲁伊特机构：斯坦福大学的提案编号：0735551 EFRI-CBE：心血管细胞界面和组织构建体的工程构造，缩减细胞和组织是再生医学的理想目标，以及对细胞和生物分泌水平的相互作用的基础研究，这是有几个原因的基础研究。首先，通过易于识别的免疫组织化学标记以及特征性的电动作用电位和机械收缩，可以促进对成功细胞分化为心肌细胞成功的干细胞分化。其次，在没有药物或机电刺激的情况下，培养中的外植物细胞失去了其形态和组织，这表明细胞组织取决于这些线索。最后，心脏发作期间的心肌不会再生，肌肉减弱会导致心力衰竭。对如何再生心脏肌细胞和心脏组织如何为心脏病（影响7100万美国人）创造成功疗法至关重要的基本了解至关重要。最近，几项研究表明，使用工程组织移植物将细胞直接注入细胞或原位修复，干细胞可能会提供再生潜力。该项目的智力优点在于开发基础知识和模型，以供细胞对环境线索的反应。多能细胞对环境变化的反应为表征环境适应和重塑的阈值和机制提供了测试床。基线和耦合实验的结果将作为其他研究人员提供数据库。模型和结果将通过该领域的研究人员以及公共研讨会论坛的出版和研讨会来传播。这项工作的更广泛影响在于增强对细胞信号和分化的知识，培养环境参数在组织工程中的作用，以及增强的设计指南和技术，最终将使对心脏病受害者的治疗治疗最终产生。这项研究的主题将纳入教学基础工程和材料课程的模块中，主要研究人员（PIS）将招募本科生在其实验室中的研究经验。 PI积极参与外展，本科研究机会和教师计划的研究经验，并将扩大与该项目相关的这些工作。该研究主题的研讨会将在该项目的最后一年举行。